4[1]E. Snitzer, H. Po, F. Hakimi, R. Tumminelli, B. C.Mccollum, Double-clad, offset core Nd fiber laser Optical fiber communication Conf, 1988:PD5.
5[2]J.P. Koplow, S. W. Moore and D. V. Kliner, A new method for side pumping of double clad fibre sources IEEE. J. Quant. Eletron, 2003, 39(4): 529-540.
6[3]H. Po, J. D. Cao and B. M. Laliberte,High power Neo dymium-doped single transverse mode fibre laser Electron. Lett, 1993,29(17) :1500-1501.
7[4]H. Zellmer, U. Willamowski and A. Tunnermann,High-power CW neodymium-doped fiber laser operating at 9.2W with high beam quality Opt. Lett, 1995,20(6) :578-580.
8[5]H.M. Pask,J. L. Archambault, D. C. Hanna, Operation of cladding-pumped Yb3+ doped silica fibre lasers in 1μm region Electron. Lett, 1994,30 ( 11 ): 863 - 865.
9[6]Muendel. M, B. Engstrom and D. Kea, 35-watt CW singlemode ytterbium fiber laser at 1. 1(m Proc. CLEO 1997, Post-deadline paper CPD30- 1.
10[7]V. Dominic, S. Maccormack, R. Waarts, 110W fiber laser Electron. Lett, 1999, 35(14): 1158-1160.